[Docs] Add memcheck (and similar) tutorials and links to developer guide

[joshua-white]

What needs to be documented? It would be nice to provide some tips for new developers in using memcheck, totalview, nsight compute, etc., with GEOSX. This could likely be a very short section with GEOSX-specific flags / use-patterns, and then a link to external generic tutorials.

What sort of documentation would help? DeveloperGuide

What are the deficiencies of the existing documentation? We will likely have a growing team of new-ish developers who are not experienced with advanced debugging, memory-check, and performance tools. Any pointers to get people started would be useful, and may help take some of the burden off the core development team.

Additional notes or context Other suggestions or discussion welcome.